czb_a_eng (10.10.2012)
- 4 -
Kompetent für Elektroniksysteme
czb_a_eng (10.10.2012)
- 5 -
Kompetent für Elektroniksysteme
Adjusting the Microphone Level
The microphone level of the handset is adjusted correctly ex factory. If you still wish to change it, the
output level can be adjusted using the potentiometer near the microphone capsule at the outer side
of the handset.
The rest includes an AF amplifier that can be configured for different operation modes. It supplies the
int. and ext. loudspeaker with a maximum of 3 watt each. The used signal is derived from the earphone
AFand hence is independent from volume settings of the radio. If necessary, the basic sensitivity can
be adjusted with the poti inside the rest. Ex factory, a level of 500 mV is set.
The integrated AF amplifier can be muted for the internal and external loudspeaker. Muting is always
active when PTT is keyed. Furthermore, muting is active while the handpiece is taken if jumper JP1
is closed (factory default).
Pin Assignment Socket ST1
Pin
Funktion
1
AF input (transformer 200 or 600 ohm)
2
AF input (transformer 200 or 600 ohm)
3
PTT (semiconductor relay)
4
PTT (semiconductor relay)
5
GND
6
AF out
7
AF out
8
squelch oder hook - (JP2+3)
9
squelch oder hook + (JP2+3)
10
+ 12 volt operating voltage
socket ST1is realized
as a terminal strip
inside the rest
Function Squelch or Hook
To pins 8 and 9 of ST1 a squelch signal of the radio can be applied in order to display a carrier and
to activate/deactivate the loudspeaker (fatory default: JP2/JP3 closed at the bottom)
Alternatively, these pins can be used as an output of the hook status via a semiconductor relay (JP2/
JP3 closed at the top)
Connection to FuG8/9
The connection is accomplished via a cable with BOS plug.
BOS plug socket ST1
D
1
E
2
C
3
B
4
J
5
F
6
H
7
J
8
A
9
B
10
Inside the BOS plug a voltage divider has to be included, that redu-
ces the nominal level from 500mV to 4mV.
180 ohm
10 kohm
F
H
6
7
500 mV
4 mV
Содержание Commander Zweitbesprechung R
Страница 1: ...Commander Zweitbesprechung R...
